class JamRuby::Promotional < ActiveRecord::Base
  self.table_name = :promotionals

  default_scope :order => 'aasm_state ASC, position ASC, updated_at DESC'

  attr_accessible :position, :aasm_state

  include AASM
  HIDDEN_STATE = :hidden
  ACTIVE_STATE = :active
  EXPIRED_STATE = :expired
  STATES = [HIDDEN_STATE, ACTIVE_STATE, EXPIRED_STATE]

  aasm do
    state HIDDEN_STATE, :initial => true
    state ACTIVE_STATE
    state EXPIRED_STATE
    
    event :activate do
      transitions :from => [HIDDEN_STATE, EXPIRED_STATE], :to => ACTIVE_STATE
    end
    
    event :expire do
      transitions :from => [HIDDEN_STATE, ACTIVE_STATE], :to => EXPIRED_STATE
    end

    event :hide do
      transitions :from => [HIDDEN_STATE, ACTIVE_STATE], :to => HIDDEN_STATE
    end

  end

  def state
    aasm_state
  end

  def self.active_promotionals
    self.where(:aasm_state => ACTIVE_STATE).limit(100)
  end

end

class JamRuby::PromoBuzz < JamRuby::Promotional
  attr_accessible :image, :text_short, :text_long, :position, :aasm_state, :key
  
  def self.create_with_params(params)
    obj = self.new
    obj.update_with_params(params)
    obj.save!
    obj
  end

  def update_with_params(params)
    self.text_short = params[:text_short]
    self.text_long = params[:text_long]
    self.position = params[:position]
    self.aasm_state = params[:aasm_state]
    self.key = params[:key]
    self
  end

  def admin_title
    "Buzz #{created_at.strftime('%Y-%m-%d %H-%M')}"
  end

  def image_name
    fn = image ? image.path || image.filename : nil
    File.basename(fn) if fn
  end

  def image_url
    self.image.direct_fog_url(with_path: true)
  end

end

class JamRuby::PromoLatest < JamRuby::Promotional
  belongs_to :latest, :polymorphic => true

  attr_accessible :latest

  def self.latest_candidates
    recordings = Recording
      .where('music_session_id IS NOT NULL')
      .order('created_at DESC')
      .limit(10)
    sessions = MusicSession
      .where("music_sessions.id NOT IN ('#{recordings.map(&:music_session_id).join("','")}')")
      .order('created_at DESC')
      .limit(10)
    latests = (recordings + sessions).sort { |o1,o2| o2.created_at <=> o1.created_at }
    latests.collect do |ll|
      nm = if ll.is_a?(Recording)
             "#{ll.class.name.demodulize}:  #{ll.band.present? ? ll.band.name : ll.owner.name}"
           else
             "#{ll.class.name.demodulize}:  #{ll.band.present? ? ll.band.name : ll.creator.name}"
           end
      { :name => nm, :id => ll.id, :record => ll }
    end
  end

  def self.create_with_params(params)
    obj = self.new
    obj.update_with_params(params)
    obj.save!
    obj
  end

  def update_with_params(params)
    if (latest_id = params[:latest][:id]).present?
      self.latest = Recording.where(:id => latest_id).limit(1).all[0] ||
        MusicSession.where(:id => latest_id).limit(1).all[0]
    end
    self.position = params[:position]
    self.aasm_state = params[:aasm_state]
    self
  end

  def self.latest_display_name(ll)
    return '' unless ll
    nm = if ll.is_a?(Recording)
           ll.band.present? ? ll.band.name : ll.owner.name
         else
           ll.band.present? ? ll.band.name : ll.creator.name
         end
    "#{ll.class.name.demodulize}:  #{nm} (#{ll.created_at})"
  end

  def latest_display_name
    self.class.latest_display_name(self.latest)
  end

end